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  <h1>CodeMirror</h1>
  <h2 class="underline">In-browser code editing made almost bearable</h2>
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<p>CodeMirror is a JavaScript library that can be used to create a
relatively pleasant editor interface for code-like content &#x2015;
computer programs, HTML markup, and similar. If a parser has been
written for the language you are editing (see below for a list of
supported languages), the code will be coloured, and the editor will
help you with indentation.</p>

<p>To get a look at CodeMirror, see the test pages for the various
parsers...</p>

<ul>
  <li><a href="jstest.html">JavaScript</a></li>
  <li><a href="htmltest.html">XML/HTML</a></li>
  <li><a href="csstest.html">CSS</a></li>
  <li><a href="sparqltest.html">SPARQL</a></li>
  <li><a href="mixedtest.html">HTML mixed-mode</a></li>
  <li><a href="contrib/php/index.html">HTML+PHP mixed-mode</a> (courtesy of <a href="contrib/php/LICENSE">Yahoo!</a>)</li>
  <li><a href="contrib/python/index.html">Python</a> (courtesy of <a href="contrib/python/LICENSE">Timothy Farrell</a>)</li>
  <li><a href="contrib/lua/index.html">Lua</a> (courtesy of <a href="http://francio.pl/">Franciszek Wawrzak</a>)</li>
  <li><a href="http://github.com/hakunin/ruby-in-codemirror/tree/master">Ruby</a> (by Michal Hantl, unfinished)</li>
  <li><a href="contrib/sql/index.html">SQL</a> (courtesy of John Benediktsson)</li>
  <li><a href="contrib/plsql/index.html">PLSQL</a> (courtesy of <a href="http://www.oracle-and-apex.com/">Peter Raganitsch</a>)</li>
  <li><a href="http://www.liranuna.com/diff-parser-for-codemirror/">diff</a> (courtesy of <a href="http://www.liranuna.com">Liran Nuna</a>)</li>
  <li><a href="contrib/groovy/index.html">Groovy</a> (by <a href="http://exoplatform.org/">eXo Platform</a>)</li>
  <li><a href="contrib/csharp/index.html">C#</a> (by <a href="http://skilltesting.com/">Boris Gaber and Christopher Buchino</a>)</li>
</ul>

<p>Or take a look at some real-world uses of the system...</p>

<ul>
  <li><a href="http://kml-samples.googlecode.com/svn/trunk/interactive/index.html">Google Earth KML sampler</a></li>
  <li><a href="http://eloquentjavascript.net/chapter1.html">Eloquent JavaScript's console</a></li>
  <li><a href="http://demo.qooxdoo.org/current/playground/#Hello_World">The qooxdoo playground</a></li>
  <li><a href="http://billmill.org/static/canvastutorial/index.html">A cool tutorial about the &lt;canvas> element</a></li>
  <li><a href="http://orc.csres.utexas.edu/tryorc.shtml">An online IDE for the Orc programming language</a></li>
  <li><a href="http://code.google.com/apis/ajax/playground">Google's API playground</a></li>
  <li><a href="http://craic.com/tutorials/javascript/raphael_live/raphael_live.html">Raphaël Live</a></li>
  <li><a href="http://dev.freebaseapps.com/">Freebase's Acre IDE</a></li>
  <li><a href="http://jsbin.com/">JS Bin</a></li>
  <li><a href="http://www.rockettheme.com/extensions-joomla/rokpad">The RokPad plugin for Joomla</a></li>
  <li><a href="http://scraperwiki.com/editor/">The scraperwiki editor</a></li>
</ul>

<h2>Releases</h2>

<p class="rel"><em>22-07-2010</em>: <a
href="http://marijn.haverbeke.nl/codemirror/codemirror-0.8.zip">Version
0.8</a>:</p>

<ul class="rel">
  <li>Add a <code>cursorCoords</code> method to find the screen
  coordinates of the cursor.</li>
  <li>A number of fixes and support for more syntax in the PHP parser.</li>
  <li>Fix indentation problem with JSON-mode JS parser in Webkit.</li>
  <li>Add a <a href="compress.html">minification</a> UI.</li>
  <li>Support a <code>height: dynamic</code> mode, where the editor's
  height will adjust to the size of its content.</li>
  <li>Better support for IME input mode.</li>
  <li>Fix JavaScript parser getting confused when seeing a no-argument
  function call.</li>
  <li>Have CSS parser see the difference between selectors and other
  identifiers.</li>
  <li>Fix scrolling bug when pasting in a horizontally-scrolled
  editor.</li>
  <li>Support <code>toTextArea</code> method in instances created with
  <code>fromTextArea</code>.</li>
  <li>Work around new Opera cursor bug that causes the cursor to jump
  when pressing backspace at the end of a line.</li>
</ul>

<p class="rel"><em>21-06-2010</em>: <a
href="http://marijn.haverbeke.nl/codemirror/codemirror-0.7.zip">Version
0.7</a>:</p>

<ul class="rel">
  <li>Fixes issue where calling <code>.submit()</code> on a form with
  a <code>fromTextArea</code> CodeMirror failed to submit the
  edited content.</li>
  <li>Add <a href="contrib/groovy/index.html">Groovy</a> parser (hosted externally).</li>
  <li>Make line-numbering much, much faster.</li>
  <li>Fix occasional buggy behaviour of the enter key in Opera.</li>
  <li>Add a <a href="faq.html">FAQ</a> document.</li>
  <li>Make search use do-what-I-mean Emacs-like behaviour to determine
  case-sensitivitiy is not explicitly specified.</li>
  <li>Add a C# parser contrib module.</li>
  <li>A number of bugfixes and extensions to the PHP parser (lambdas,
  abstract classes, configurable opening tags).</li>
  <li>Fix multiline comments in the Lua parser.</li>
</ul>

<p class="rel"><em>27-04-2010</em>: <a
href="http://marijn.haverbeke.nl/codemirror/codemirror-0.67.zip">Version
0.67</a>: More consistent page-up/page-down behaviour across browsers.
Fix some issues with hidden editors looping forever when line-numbers
were enabled. Make PHP parser parse <code>"\\"</code> correctly. Have
<code>jumpToLine</code> work on line handles, and add
<code>cursorLine</code> function to fetch the line handle where the
cursor currently is. Add new <code>setStylesheet</code> function to
switch style-sheets in a running editor.</p>

<p class="rel"><em>01-03-2010</em>: <a
href="http://marijn.haverbeke.nl/codemirror/codemirror-0.66.zip">Version
0.66</a>: Adds <code>removeLine</code> method to API. Introduces the
<a href="contrib/plsql/index.html">PLSQL parser</a>. Marks XML errors
by adding (rather than replacing) a CSS class, so that they can be
disabled by modifying their style. Fixes several selection bugs, and a
number of small glitches.</p>

<p class="rel"><em>12-11-2009</em>: <a
href="http://marijn.haverbeke.nl/codemirror/codemirror-0.65.zip">Version
0.65</a>: Add support for having both line-wrapping and line-numbers
turned on, make paren-highlighting style customisable
(<code>markParen</code> and <code>unmarkParen</code> config options),
work around a selection bug that Opera <em>re</em>introduced in
version 10.</p>

<p class="rel"><em>23-10-2009</em>: <a
href="http://marijn.haverbeke.nl/codemirror/codemirror-0.64.zip">Version
0.64</a>: Solves some issues introduced by the paste-handling changes
from the previous release. Adds <code>setSpellcheck</code>,
<code>setTextWrapping</code>, <code>setIndentUnit</code>,
<code>setUndoDepth</code>, <code>setTabMode</code>, and
<code>setLineNumbers</code> to customise a running editor. Introduces
an <a href="contrib/sql/index.html">SQL</a> parser. Fixes a few small
problems in the <a href="contrib/python/index.html">Python</a> parser.
And, as usual, add workarounds for various newly discovered browser
incompatibilities.</p>

<p class="rel"><em>31-08-2009</em>: <a
href="http://marijn.haverbeke.nl/codemirror/codemirror-0.63.zip">Version
0.63</a>: Overhaul of paste-handling (less fragile), fixes for several
serious IE8 issues (cursor jumping, end-of-document bugs) and a number
of small problems.</p>

<p class="rel"><em>30-05-2009</em>: <a
href="http://marijn.haverbeke.nl/codemirror/codemirror-0.62.zip">Version
0.62</a>: Introduces <a href="contrib/python/index.html">Python</a>
and <a href="contrib/lua/index.html">Lua</a> parsers. Add
<code>setParser</code> (on-the-fly mode changing) and
<code>clearHistory</code> methods. Make parsing passes time-based
instead of lines-based (see the <code>passTime</code> option).</p>

<h2 id="supported">Supported browsers</h2>

<p>At this time, the following browsers are supported:</p>

<ul>
  <li>Firefox 1.5 or higher</li>
  <li>Internet Explorer 6 or higher</li>
  <li>Safari 3 or higher</li>
  <li>Opera 9.52 or higher</li>
  <li>Chrome</li>
</ul>

<p>Making it work on other browsers that have decent support for the
W3C DOM model should not be too hard, but I am not actively testing
against those.</p>

<h2>Getting the code</h2>

<p>All of CodeMirror is released under a <a
href="LICENSE">zlib-style</a> license. To get it, you can download the
<a href="http://marijn.haverbeke.nl/codemirror/codemirror.zip">latest
release</a> or the current <a
href="http://marijn.haverbeke.nl/codemirror/codemirror-latest.zip">development
snapshot</a> as zip files, try the <a href="compress.html">compression
API</a> to create a compressed version, or use <a
href="http://git-scm.com/">git</a> to get the repository:</p>

<pre class="code">git clone http://marijn.haverbeke.nl/codemirror/.git</pre>

<p>This second method is recommended if you are planning to hack on
CodeMirror &#x2015; it makes it easy to record your patches and share
them with me. CodeMirror can also be found on GitHub: <a
href="http://github.com/marijnh/CodeMirror">http://github.com/marijnh/CodeMirror</a>.</p>

<h2>Support</h2>

<p>There is a <a
href="http://groups.google.com/group/codemirror">Google group</a> (a
sort of mailing list/newsgroup thingy) for discussion and news related
to CodeMirror. Please check the <a href="faq.html">FAQ</a> before
asking a questoin. You can also e-mail me directly: <a
href="mailto:marijnh@gmail.com">Marijn Haverbeke</a>.</p>

<h2>Documentation</h2>

<ul>
  <li>The <a href="manual.html">manual</a> is all most users will need
  to read (or skim).</li>
  <li>If you're interested in working on the code, <a
  href="story.html">this document</a> about CodeMirror's architecture
  will be useful.</li>
  <li>The <a href="http://github.com/marijnh/CodeMirror">source
  code</a> is, for the most part, rather well commented, so if all
  else fails, you can try reading it.</li>
</ul>

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